Replace adev->srbm_mutex with a spinlock adev->srbm_lock

v2: rebased on 4.12 and included gfx9
Signed-off-by: Andres Rodriguez <andre...@gmail.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h               |  2 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c |  4 +--
 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c |  4 +--
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c        |  2 +-
 drivers/gpu/drm/amd/amdgpu/cik_sdma.c             |  4 +--
 drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c             | 20 ++++++-------
 drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c             | 34 +++++++++++------------
 drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c             | 24 ++++++++--------
 drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c            |  4 +--
 drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c            |  4 +--
 10 files changed, 51 insertions(+), 51 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h 
b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 4f54846..b9a4161 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1455,21 +1455,21 @@ struct amdgpu_device {
        struct work_struct              reset_work;
        struct notifier_block           acpi_nb;
        struct amdgpu_i2c_chan          *i2c_bus[AMDGPU_MAX_I2C_BUS];
        struct amdgpu_debugfs           debugfs[AMDGPU_DEBUGFS_MAX_COMPONENTS];
        unsigned                        debugfs_count;
 #if defined(CONFIG_DEBUG_FS)
        struct dentry                   
*debugfs_regs[AMDGPU_DEBUGFS_MAX_COMPONENTS];
 #endif
        struct amdgpu_atif              atif;
        struct amdgpu_atcs              atcs;
-       struct mutex                    srbm_mutex;
+       spinlock_t                      srbm_lock;
        /* GRBM index mutex. Protects concurrent access to GRBM index */
        struct mutex                    grbm_idx_mutex;
        struct dev_pm_domain            vga_pm_domain;
        bool                            have_disp_power_ref;
 
        /* BIOS */
        bool                            is_atom_fw;
        uint8_t                         *bios;
        uint32_t                        bios_size;
        struct amdgpu_bo                *stollen_vga_memory;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c
index 5254562..a009990 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c
@@ -162,30 +162,30 @@ static inline struct amdgpu_device 
*get_amdgpu_device(struct kgd_dev *kgd)
 {
        return (struct amdgpu_device *)kgd;
 }
 
 static void lock_srbm(struct kgd_dev *kgd, uint32_t mec, uint32_t pipe,
                        uint32_t queue, uint32_t vmid)
 {
        struct amdgpu_device *adev = get_amdgpu_device(kgd);
        uint32_t value = PIPEID(pipe) | MEID(mec) | VMID(vmid) | QUEUEID(queue);
 
-       mutex_lock(&adev->srbm_mutex);
+       spin_lock(&adev->srbm_lock);
        WREG32(mmSRBM_GFX_CNTL, value);
 }
 
 static void unlock_srbm(struct kgd_dev *kgd)
 {
        struct amdgpu_device *adev = get_amdgpu_device(kgd);
 
        WREG32(mmSRBM_GFX_CNTL, 0);
-       mutex_unlock(&adev->srbm_mutex);
+       spin_unlock(&adev->srbm_lock);
 }
 
 static void acquire_queue(struct kgd_dev *kgd, uint32_t pipe_id,
                                uint32_t queue_id)
 {
        struct amdgpu_device *adev = get_amdgpu_device(kgd);
 
        uint32_t mec = (++pipe_id / adev->gfx.mec.num_pipe_per_mec) + 1;
        uint32_t pipe = (pipe_id % adev->gfx.mec.num_pipe_per_mec);
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c
index db7410a..6b93a5c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c
@@ -123,30 +123,30 @@ static inline struct amdgpu_device 
*get_amdgpu_device(struct kgd_dev *kgd)
 {
        return (struct amdgpu_device *)kgd;
 }
 
 static void lock_srbm(struct kgd_dev *kgd, uint32_t mec, uint32_t pipe,
                        uint32_t queue, uint32_t vmid)
 {
        struct amdgpu_device *adev = get_amdgpu_device(kgd);
        uint32_t value = PIPEID(pipe) | MEID(mec) | VMID(vmid) | QUEUEID(queue);
 
-       mutex_lock(&adev->srbm_mutex);
+       spin_lock(&adev->srbm_lock);
        WREG32(mmSRBM_GFX_CNTL, value);
 }
 
 static void unlock_srbm(struct kgd_dev *kgd)
 {
        struct amdgpu_device *adev = get_amdgpu_device(kgd);
 
        WREG32(mmSRBM_GFX_CNTL, 0);
-       mutex_unlock(&adev->srbm_mutex);
+       spin_unlock(&adev->srbm_lock);
 }
 
 static void acquire_queue(struct kgd_dev *kgd, uint32_t pipe_id,
                                uint32_t queue_id)
 {
        struct amdgpu_device *adev = get_amdgpu_device(kgd);
 
        uint32_t mec = (++pipe_id / adev->gfx.mec.num_pipe_per_mec) + 1;
        uint32_t pipe = (pipe_id % adev->gfx.mec.num_pipe_per_mec);
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 0bfc6c6..07f16b4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1857,21 +1857,21 @@ int amdgpu_device_init(struct amdgpu_device *adev,
                 amdgpu_asic_name[adev->asic_type], pdev->vendor, pdev->device,
                 pdev->subsystem_vendor, pdev->subsystem_device, 
pdev->revision);
 
        /* mutex initialization are all done here so we
         * can recall function without having locking issues */
        mutex_init(&adev->vm_manager.lock);
        atomic_set(&adev->irq.ih.lock, 0);
        mutex_init(&adev->firmware.mutex);
        mutex_init(&adev->pm.mutex);
        mutex_init(&adev->gfx.gpu_clock_mutex);
-       mutex_init(&adev->srbm_mutex);
+       spin_lock_init(&adev->srbm_lock);
        mutex_init(&adev->grbm_idx_mutex);
        mutex_init(&adev->mn_lock);
        hash_init(adev->mn_hash);
 
        amdgpu_check_arguments(adev);
 
        /* Registers mapping */
        /* TODO: block userspace mapping of io register */
        spin_lock_init(&adev->mmio_idx_lock);
        spin_lock_init(&adev->smc_idx_lock);
diff --git a/drivers/gpu/drm/amd/amdgpu/cik_sdma.c 
b/drivers/gpu/drm/amd/amdgpu/cik_sdma.c
index c216e16..fe462ec 100644
--- a/drivers/gpu/drm/amd/amdgpu/cik_sdma.c
+++ b/drivers/gpu/drm/amd/amdgpu/cik_sdma.c
@@ -382,30 +382,30 @@ static int cik_sdma_gfx_resume(struct amdgpu_device *adev)
        struct amdgpu_ring *ring;
        u32 rb_cntl, ib_cntl;
        u32 rb_bufsz;
        u32 wb_offset;
        int i, j, r;
 
        for (i = 0; i < adev->sdma.num_instances; i++) {
                ring = &adev->sdma.instance[i].ring;
                wb_offset = (ring->rptr_offs * 4);
 
-               mutex_lock(&adev->srbm_mutex);
+               spin_lock(&adev->srbm_lock);
                for (j = 0; j < 16; j++) {
                        cik_srbm_select(adev, 0, 0, 0, j);
                        /* SDMA GFX */
                        WREG32(mmSDMA0_GFX_VIRTUAL_ADDR + sdma_offsets[i], 0);
                        WREG32(mmSDMA0_GFX_APE1_CNTL + sdma_offsets[i], 0);
                        /* XXX SDMA RLC - todo */
                }
                cik_srbm_select(adev, 0, 0, 0, 0);
-               mutex_unlock(&adev->srbm_mutex);
+               spin_unlock(&adev->srbm_lock);
 
                WREG32(mmSDMA0_TILING_CONFIG + sdma_offsets[i],
                       adev->gfx.config.gb_addr_config & 0x70);
 
                WREG32(mmSDMA0_SEM_INCOMPLETE_TIMER_CNTL + sdma_offsets[i], 0);
                WREG32(mmSDMA0_SEM_WAIT_FAIL_TIMER_CNTL + sdma_offsets[i], 0);
 
                /* Set ring buffer size in dwords */
                rb_bufsz = order_base_2(ring->ring_size / 4);
                rb_cntl = rb_bufsz << 1;
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c 
b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
index c0cfcb9..83391d5 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
@@ -1856,31 +1856,31 @@ static void gmc_v7_0_init_compute_vmid(struct 
amdgpu_device *adev)
        /*
         * Configure apertures:
         * LDS:         0x60000000'00000000 - 0x60000001'00000000 (4GB)
         * Scratch:     0x60000001'00000000 - 0x60000002'00000000 (4GB)
         * GPUVM:       0x60010000'00000000 - 0x60020000'00000000 (1TB)
        */
        sh_mem_bases = DEFAULT_SH_MEM_BASES | (DEFAULT_SH_MEM_BASES << 16);
        sh_mem_config = SH_MEM_ALIGNMENT_MODE_UNALIGNED <<
                        SH_MEM_CONFIG__ALIGNMENT_MODE__SHIFT;
        sh_mem_config |= MTYPE_NONCACHED << SH_MEM_CONFIG__DEFAULT_MTYPE__SHIFT;
-       mutex_lock(&adev->srbm_mutex);
+       spin_lock(&adev->srbm_lock);
        for (i = FIRST_COMPUTE_VMID; i < LAST_COMPUTE_VMID; i++) {
                cik_srbm_select(adev, 0, 0, 0, i);
                /* CP and shaders */
                WREG32(mmSH_MEM_CONFIG, sh_mem_config);
                WREG32(mmSH_MEM_APE1_BASE, 1);
                WREG32(mmSH_MEM_APE1_LIMIT, 0);
                WREG32(mmSH_MEM_BASES, sh_mem_bases);
        }
        cik_srbm_select(adev, 0, 0, 0, 0);
-       mutex_unlock(&adev->srbm_mutex);
+       spin_unlock(&adev->srbm_lock);
 }
 
 static void gfx_v7_0_config_init(struct amdgpu_device *adev)
 {
        adev->gfx.config.double_offchip_lds_buf = 1;
 }
 
 /**
  * gfx_v7_0_gpu_init - setup the 3D engine
  *
@@ -1929,36 +1929,36 @@ static void gfx_v7_0_gpu_init(struct amdgpu_device 
*adev)
                                   MTYPE_UC);
        sh_mem_cfg = REG_SET_FIELD(sh_mem_cfg, SH_MEM_CONFIG, PRIVATE_ATC, 0);
 
        sh_static_mem_cfg = REG_SET_FIELD(0, SH_STATIC_MEM_CONFIG,
                                   SWIZZLE_ENABLE, 1);
        sh_static_mem_cfg = REG_SET_FIELD(sh_static_mem_cfg, 
SH_STATIC_MEM_CONFIG,
                                   ELEMENT_SIZE, 1);
        sh_static_mem_cfg = REG_SET_FIELD(sh_static_mem_cfg, 
SH_STATIC_MEM_CONFIG,
                                   INDEX_STRIDE, 3);
 
-       mutex_lock(&adev->srbm_mutex);
+       spin_lock(&adev->srbm_lock);
        for (i = 0; i < adev->vm_manager.num_ids; i++) {
                if (i == 0)
                        sh_mem_base = 0;
                else
                        sh_mem_base = adev->mc.shared_aperture_start >> 48;
                cik_srbm_select(adev, 0, 0, 0, i);
                /* CP and shaders */
                WREG32(mmSH_MEM_CONFIG, sh_mem_cfg);
                WREG32(mmSH_MEM_APE1_BASE, 1);
                WREG32(mmSH_MEM_APE1_LIMIT, 0);
                WREG32(mmSH_MEM_BASES, sh_mem_base);
                WREG32(mmSH_STATIC_MEM_CONFIG, sh_static_mem_cfg);
        }
        cik_srbm_select(adev, 0, 0, 0, 0);
-       mutex_unlock(&adev->srbm_mutex);
+       spin_unlock(&adev->srbm_lock);
 
        gmc_v7_0_init_compute_vmid(adev);
 
        WREG32(mmSX_DEBUG_1, 0x20);
 
        WREG32(mmTA_CNTL_AUX, 0x00010000);
 
        tmp = RREG32(mmSPI_CONFIG_CNTL);
        tmp |= 0x03000000;
        WREG32(mmSPI_CONFIG_CNTL, tmp);
@@ -2962,40 +2962,40 @@ struct hqd_registers
        u32 cp_hqd_hq_scheduler1;
        u32 cp_mqd_control;
 };
 
 static void gfx_v7_0_compute_pipe_init(struct amdgpu_device *adev, int me, int 
pipe)
 {
        u64 eop_gpu_addr;
        u32 tmp;
        size_t eop_offset = me * pipe * GFX7_MEC_HPD_SIZE * 2;
 
-       mutex_lock(&adev->srbm_mutex);
+       spin_lock(&adev->srbm_lock);
        eop_gpu_addr = adev->gfx.mec.hpd_eop_gpu_addr + eop_offset;
 
        cik_srbm_select(adev, me, pipe, 0, 0);
 
        /* write the EOP addr */
        WREG32(mmCP_HPD_EOP_BASE_ADDR, eop_gpu_addr >> 8);
        WREG32(mmCP_HPD_EOP_BASE_ADDR_HI, upper_32_bits(eop_gpu_addr) >> 8);
 
        /* set the VMID assigned */
        WREG32(mmCP_HPD_EOP_VMID, 0);
 
        /* set the EOP size, register value is 2^(EOP_SIZE+1) dwords */
        tmp = RREG32(mmCP_HPD_EOP_CONTROL);
        tmp &= ~CP_HPD_EOP_CONTROL__EOP_SIZE_MASK;
        tmp |= order_base_2(GFX7_MEC_HPD_SIZE / 8);
        WREG32(mmCP_HPD_EOP_CONTROL, tmp);
 
        cik_srbm_select(adev, 0, 0, 0, 0);
-       mutex_unlock(&adev->srbm_mutex);
+       spin_unlock(&adev->srbm_lock);
 }
 
 static int gfx_v7_0_mqd_deactivate(struct amdgpu_device *adev)
 {
        int i;
 
        /* disable the queue if it's active */
        if (RREG32(mmCP_HQD_ACTIVE) & 1) {
                WREG32(mmCP_HQD_DEQUEUE_REQUEST, 1);
                for (i = 0; i < adev->usec_timeout; i++) {
@@ -3210,29 +3210,29 @@ static int gfx_v7_0_compute_queue_init(struct 
amdgpu_device *adev, int ring_id)
        if (r) {
                dev_warn(adev->dev, "(%d) pin MQD bo failed\n", r);
                goto out_unreserve;
        }
        r = amdgpu_bo_kmap(ring->mqd_obj, (void **)&mqd);
        if (r) {
                dev_warn(adev->dev, "(%d) map MQD bo failed\n", r);
                goto out_unreserve;
        }
 
-       mutex_lock(&adev->srbm_mutex);
+       spin_lock(&adev->srbm_lock);
        cik_srbm_select(adev, ring->me, ring->pipe, ring->queue, 0);
 
        gfx_v7_0_mqd_init(adev, mqd, mqd_gpu_addr, ring);
        gfx_v7_0_mqd_deactivate(adev);
        gfx_v7_0_mqd_commit(adev, mqd);
 
        cik_srbm_select(adev, 0, 0, 0, 0);
-       mutex_unlock(&adev->srbm_mutex);
+       spin_unlock(&adev->srbm_lock);
 
        amdgpu_bo_kunmap(ring->mqd_obj);
 out_unreserve:
        amdgpu_bo_unreserve(ring->mqd_obj);
 out:
        return 0;
 }
 
 /**
  * gfx_v7_0_cp_compute_resume - setup the compute queue registers
@@ -5088,28 +5088,28 @@ static void 
gfx_v7_0_set_compute_eop_interrupt_state(struct amdgpu_device *adev,
                DRM_ERROR("Ignoring request to enable interrupts for invalid 
me:%d\n", me);
                return;
        }
 
        if (pipe >= adev->gfx.mec.num_pipe_per_mec) {
                DRM_ERROR("Ignoring request to enable interrupts for invalid "
                                "me:%d pipe:%d\n", pipe, me);
                return;
        }
 
-       mutex_lock(&adev->srbm_mutex);
+       spin_lock(&adev->srbm_lock);
        cik_srbm_select(adev, me, pipe, 0, 0);
 
        WREG32_FIELD(CPC_INT_CNTL, TIME_STAMP_INT_ENABLE,
                        state == AMDGPU_IRQ_STATE_DISABLE ? 0 : 1);
 
        cik_srbm_select(adev, 0, 0, 0, 0);
-       mutex_unlock(&adev->srbm_mutex);
+       spin_unlock(&adev->srbm_lock);
 }
 
 static int gfx_v7_0_set_priv_reg_fault_state(struct amdgpu_device *adev,
                                             struct amdgpu_irq_src *src,
                                             unsigned type,
                                             enum amdgpu_interrupt_state state)
 {
        u32 cp_int_cntl;
 
        switch (state) {
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c 
b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index f0c1a3f..3cfe3c0 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -3936,31 +3936,31 @@ static void gfx_v8_0_init_compute_vmid(struct 
amdgpu_device *adev)
         */
        sh_mem_bases = DEFAULT_SH_MEM_BASES | (DEFAULT_SH_MEM_BASES << 16);
 
        sh_mem_config = SH_MEM_ADDRESS_MODE_HSA64 <<
                        SH_MEM_CONFIG__ADDRESS_MODE__SHIFT |
                        SH_MEM_ALIGNMENT_MODE_UNALIGNED <<
                        SH_MEM_CONFIG__ALIGNMENT_MODE__SHIFT |
                        MTYPE_CC << SH_MEM_CONFIG__DEFAULT_MTYPE__SHIFT |
                        SH_MEM_CONFIG__PRIVATE_ATC_MASK;
 
-       mutex_lock(&adev->srbm_mutex);
+       spin_lock(&adev->srbm_lock);
        for (i = FIRST_COMPUTE_VMID; i < LAST_COMPUTE_VMID; i++) {
                vi_srbm_select(adev, 0, 0, 0, i);
                /* CP and shaders */
                WREG32(mmSH_MEM_CONFIG, sh_mem_config);
                WREG32(mmSH_MEM_APE1_BASE, 1);
                WREG32(mmSH_MEM_APE1_LIMIT, 0);
                WREG32(mmSH_MEM_BASES, sh_mem_bases);
        }
        vi_srbm_select(adev, 0, 0, 0, 0);
-       mutex_unlock(&adev->srbm_mutex);
+       spin_unlock(&adev->srbm_lock);
 }
 
 static void gfx_v8_0_config_init(struct amdgpu_device *adev)
 {
        switch (adev->asic_type) {
        default:
                adev->gfx.config.double_offchip_lds_buf = 1;
                break;
        case CHIP_CARRIZO:
        case CHIP_STONEY:
@@ -3985,21 +3985,21 @@ static void gfx_v8_0_gpu_init(struct amdgpu_device 
*adev)
        gfx_v8_0_config_init(adev);
 
        /* XXX SH_MEM regs */
        /* where to put LDS, scratch, GPUVM in FSA64 space */
        sh_static_mem_cfg = REG_SET_FIELD(0, SH_STATIC_MEM_CONFIG,
                                   SWIZZLE_ENABLE, 1);
        sh_static_mem_cfg = REG_SET_FIELD(sh_static_mem_cfg, 
SH_STATIC_MEM_CONFIG,
                                   ELEMENT_SIZE, 1);
        sh_static_mem_cfg = REG_SET_FIELD(sh_static_mem_cfg, 
SH_STATIC_MEM_CONFIG,
                                   INDEX_STRIDE, 3);
-       mutex_lock(&adev->srbm_mutex);
+       spin_lock(&adev->srbm_lock);
        for (i = 0; i < adev->vm_manager.num_ids; i++) {
                vi_srbm_select(adev, 0, 0, 0, i);
                /* CP and shaders */
                if (i == 0) {
                        tmp = REG_SET_FIELD(0, SH_MEM_CONFIG, DEFAULT_MTYPE, 
MTYPE_UC);
                        tmp = REG_SET_FIELD(tmp, SH_MEM_CONFIG, APE1_MTYPE, 
MTYPE_UC);
                        tmp = REG_SET_FIELD(tmp, SH_MEM_CONFIG, ALIGNMENT_MODE,
                                            SH_MEM_ALIGNMENT_MODE_UNALIGNED);
                        WREG32(mmSH_MEM_CONFIG, tmp);
                        WREG32(mmSH_MEM_BASES, 0);
@@ -4011,21 +4011,21 @@ static void gfx_v8_0_gpu_init(struct amdgpu_device 
*adev)
                        WREG32(mmSH_MEM_CONFIG, tmp);
                        tmp = adev->mc.shared_aperture_start >> 48;
                        WREG32(mmSH_MEM_BASES, tmp);
                }
 
                WREG32(mmSH_MEM_APE1_BASE, 1);
                WREG32(mmSH_MEM_APE1_LIMIT, 0);
                WREG32(mmSH_STATIC_MEM_CONFIG, sh_static_mem_cfg);
        }
        vi_srbm_select(adev, 0, 0, 0, 0);
-       mutex_unlock(&adev->srbm_mutex);
+       spin_unlock(&adev->srbm_lock);
 
        gfx_v8_0_init_compute_vmid(adev);
 
        mutex_lock(&adev->grbm_idx_mutex);
        /*
         * making sure that the following register writes will be broadcasted
         * to all the shaders
         */
        gfx_v8_0_select_se_sh(adev, 0xffffffff, 0xffffffff, 0xffffffff);
 
@@ -5142,70 +5142,70 @@ static int gfx_v8_0_kiq_init_queue(struct amdgpu_ring 
*ring)
 
        if (adev->gfx.in_reset) { /* for GPU_RESET case */
                /* reset MQD to a clean status */
                if (adev->gfx.mec.mqd_backup[mqd_idx])
                        memcpy(mqd, adev->gfx.mec.mqd_backup[mqd_idx], 
sizeof(*mqd));
 
                /* reset ring buffer */
                ring->wptr = 0;
                amdgpu_ring_clear_ring(ring);
 
-               mutex_lock(&adev->srbm_mutex);
+               spin_lock(&adev->srbm_lock);
                vi_srbm_select(adev, ring->me, ring->pipe, ring->queue, 0);
                r = gfx_v8_0_mqd_deactivate(adev);
                if (r) {
                        dev_err(adev->dev, "failed to deactivate ring %s\n", 
ring->name);
                        goto out_unlock;
                }
                gfx_v8_0_enable_doorbell(adev, ring->use_doorbell);
                gfx_v8_0_mqd_commit(adev, mqd);
                vi_srbm_select(adev, 0, 0, 0, 0);
-               mutex_unlock(&adev->srbm_mutex);
+               spin_unlock(&adev->srbm_lock);
        } else {
-               mutex_lock(&adev->srbm_mutex);
+               spin_lock(&adev->srbm_lock);
                vi_srbm_select(adev, ring->me, ring->pipe, ring->queue, 0);
                gfx_v8_0_mqd_init(ring);
                r = gfx_v8_0_mqd_deactivate(adev);
                if (r) {
                        dev_err(adev->dev, "failed to deactivate ring %s\n", 
ring->name);
                        goto out_unlock;
                }
                gfx_v8_0_enable_doorbell(adev, ring->use_doorbell);
                gfx_v8_0_mqd_commit(adev, mqd);
                vi_srbm_select(adev, 0, 0, 0, 0);
-               mutex_unlock(&adev->srbm_mutex);
+               spin_unlock(&adev->srbm_lock);
 
                if (adev->gfx.mec.mqd_backup[mqd_idx])
                        memcpy(adev->gfx.mec.mqd_backup[mqd_idx], mqd, 
sizeof(*mqd));
        }
 
        return r;
 
 out_unlock:
        vi_srbm_select(adev, 0, 0, 0, 0);
-       mutex_unlock(&adev->srbm_mutex);
+       spin_unlock(&adev->srbm_lock);
        return r;
 }
 
 static int gfx_v8_0_kcq_init_queue(struct amdgpu_ring *ring)
 {
        struct amdgpu_device *adev = ring->adev;
        struct vi_mqd *mqd = ring->mqd_ptr;
        int mqd_idx = ring - &adev->gfx.compute_ring[0];
 
        if (!adev->gfx.in_reset && !adev->gfx.in_suspend) {
                memset((void *)mqd, 0, sizeof(*mqd));
-               mutex_lock(&adev->srbm_mutex);
+               spin_lock(&adev->srbm_lock);
                vi_srbm_select(adev, ring->me, ring->pipe, ring->queue, 0);
                gfx_v8_0_mqd_init(ring);
                vi_srbm_select(adev, 0, 0, 0, 0);
-               mutex_unlock(&adev->srbm_mutex);
+               spin_unlock(&adev->srbm_lock);
 
                if (adev->gfx.mec.mqd_backup[mqd_idx])
                        memcpy(adev->gfx.mec.mqd_backup[mqd_idx], mqd, 
sizeof(*mqd));
        } else if (adev->gfx.in_reset) { /* for GPU_RESET case */
                /* reset MQD to a clean status */
                if (adev->gfx.mec.mqd_backup[mqd_idx])
                        memcpy(mqd, adev->gfx.mec.mqd_backup[mqd_idx], 
sizeof(*mqd));
 
                /* reset ring buffer */
                ring->wptr = 0;
@@ -5486,32 +5486,32 @@ static bool gfx_v8_0_check_soft_reset(void *handle)
                adev->gfx.srbm_soft_reset = 0;
                return false;
        }
 }
 
 static void gfx_v8_0_inactive_hqd(struct amdgpu_device *adev,
                                  struct amdgpu_ring *ring)
 {
        int i;
 
-       mutex_lock(&adev->srbm_mutex);
+       spin_lock(&adev->srbm_lock);
        vi_srbm_select(adev, ring->me, ring->pipe, ring->queue, 0);
        if (RREG32(mmCP_HQD_ACTIVE) & CP_HQD_ACTIVE__ACTIVE_MASK) {
                WREG32_FIELD(CP_HQD_DEQUEUE_REQUEST, DEQUEUE_REQ, 2);
                for (i = 0; i < adev->usec_timeout; i++) {
                        if (!(RREG32(mmCP_HQD_ACTIVE) & 
CP_HQD_ACTIVE__ACTIVE_MASK))
                                break;
                        udelay(1);
                }
        }
        vi_srbm_select(adev, 0, 0, 0, 0);
-       mutex_unlock(&adev->srbm_mutex);
+       spin_lock(&adev->srbm_lock);
 }
 
 static int gfx_v8_0_pre_soft_reset(void *handle)
 {
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;
        u32 grbm_soft_reset = 0, srbm_soft_reset = 0;
 
        if ((!adev->gfx.grbm_soft_reset) &&
            (!adev->gfx.srbm_soft_reset))
                return 0;
@@ -5603,27 +5603,27 @@ static int gfx_v8_0_soft_reset(void *handle)
 
        /* Wait a little for things to settle down */
        udelay(50);
 
        return 0;
 }
 
 static void gfx_v8_0_init_hqd(struct amdgpu_device *adev,
                              struct amdgpu_ring *ring)
 {
-       mutex_lock(&adev->srbm_mutex);
+       spin_lock(&adev->srbm_lock);
        vi_srbm_select(adev, ring->me, ring->pipe, ring->queue, 0);
        WREG32(mmCP_HQD_DEQUEUE_REQUEST, 0);
        WREG32(mmCP_HQD_PQ_RPTR, 0);
        WREG32(mmCP_HQD_PQ_WPTR, 0);
        vi_srbm_select(adev, 0, 0, 0, 0);
-       mutex_unlock(&adev->srbm_mutex);
+       spin_unlock(&adev->srbm_lock);
 }
 
 static int gfx_v8_0_post_soft_reset(void *handle)
 {
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;
        u32 grbm_soft_reset = 0, srbm_soft_reset = 0;
 
        if ((!adev->gfx.grbm_soft_reset) &&
            (!adev->gfx.srbm_soft_reset))
                return 0;
@@ -6877,28 +6877,28 @@ static void 
gfx_v8_0_set_compute_eop_interrupt_state(struct amdgpu_device *adev,
                DRM_ERROR("Ignoring request to enable interrupts for invalid 
me:%d\n", me);
                return;
        }
 
        if (pipe >= adev->gfx.mec.num_pipe_per_mec) {
                DRM_ERROR("Ignoring request to enable interrupts for invalid "
                                "me:%d pipe:%d\n", pipe, me);
                return;
        }
 
-       mutex_lock(&adev->srbm_mutex);
+       spin_lock(&adev->srbm_lock);
        vi_srbm_select(adev, me, pipe, 0, 0);
 
        WREG32_FIELD(CPC_INT_CNTL, TIME_STAMP_INT_ENABLE,
                        state == AMDGPU_IRQ_STATE_DISABLE ? 0 : 1);
 
        vi_srbm_select(adev, 0, 0, 0, 0);
-       mutex_unlock(&adev->srbm_mutex);
+       spin_unlock(&adev->srbm_lock);
 }
 
 static int gfx_v8_0_set_priv_reg_fault_state(struct amdgpu_device *adev,
                                             struct amdgpu_irq_src *source,
                                             unsigned type,
                                             enum amdgpu_interrupt_state state)
 {
        WREG32_FIELD(CP_INT_CNTL_RING0, PRIV_REG_INT_ENABLE,
                     state == AMDGPU_IRQ_STATE_DISABLE ? 0 : 1);
 
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c 
b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 388a6bb..a16cee7 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -1373,58 +1373,58 @@ static void gfx_v9_0_init_compute_vmid(struct 
amdgpu_device *adev)
         * LDS:         0x60000000'00000000 - 0x60000001'00000000 (4GB)
         * Scratch:     0x60000001'00000000 - 0x60000002'00000000 (4GB)
         * GPUVM:       0x60010000'00000000 - 0x60020000'00000000 (1TB)
         */
        sh_mem_bases = DEFAULT_SH_MEM_BASES | (DEFAULT_SH_MEM_BASES << 16);
 
        sh_mem_config = SH_MEM_ADDRESS_MODE_64 |
                        SH_MEM_ALIGNMENT_MODE_UNALIGNED <<
                        SH_MEM_CONFIG__ALIGNMENT_MODE__SHIFT; 
 
-       mutex_lock(&adev->srbm_mutex);
+       spin_lock(&adev->srbm_lock);
        for (i = FIRST_COMPUTE_VMID; i < LAST_COMPUTE_VMID; i++) {
                soc15_grbm_select(adev, 0, 0, 0, i);
                /* CP and shaders */
                WREG32(SOC15_REG_OFFSET(GC, 0, mmSH_MEM_CONFIG), sh_mem_config);
                WREG32(SOC15_REG_OFFSET(GC, 0, mmSH_MEM_BASES), sh_mem_bases);
        }
        soc15_grbm_select(adev, 0, 0, 0, 0);
-       mutex_unlock(&adev->srbm_mutex);
+       spin_unlock(&adev->srbm_lock);
 }
 
 static void gfx_v9_0_gpu_init(struct amdgpu_device *adev)
 {
        u32 tmp;
        int i;
 
        WREG32_FIELD15(GC, 0, GRBM_CNTL, READ_TIMEOUT, 0xff);
 
        gfx_v9_0_tiling_mode_table_init(adev);
 
        gfx_v9_0_setup_rb(adev);
        gfx_v9_0_get_cu_info(adev, &adev->gfx.cu_info);
 
        /* XXX SH_MEM regs */
        /* where to put LDS, scratch, GPUVM in FSA64 space */
-       mutex_lock(&adev->srbm_mutex);
+       spin_lock(&adev->srbm_lock);
        for (i = 0; i < 16; i++) {
                soc15_grbm_select(adev, 0, 0, 0, i);
                /* CP and shaders */
                tmp = 0;
                tmp = REG_SET_FIELD(tmp, SH_MEM_CONFIG, ALIGNMENT_MODE,
                                    SH_MEM_ALIGNMENT_MODE_UNALIGNED);
                WREG32(SOC15_REG_OFFSET(GC, 0, mmSH_MEM_CONFIG), tmp);
                WREG32(SOC15_REG_OFFSET(GC, 0, mmSH_MEM_BASES), 0);
        }
        soc15_grbm_select(adev, 0, 0, 0, 0);
 
-       mutex_unlock(&adev->srbm_mutex);
+       spin_unlock(&adev->srbm_lock);
 
        gfx_v9_0_init_compute_vmid(adev);
 
        mutex_lock(&adev->grbm_idx_mutex);
        /*
         * making sure that the following register writes will be broadcasted
         * to all the shaders
         */
        gfx_v9_0_select_se_sh(adev, 0xffffffff, 0xffffffff, 0xffffffff);
 
@@ -2245,40 +2245,40 @@ static int gfx_v9_0_kiq_init_queue(struct amdgpu_ring 
*ring)
        int mqd_idx = AMDGPU_MAX_COMPUTE_RINGS;
 
        if (is_kiq) {
                gfx_v9_0_kiq_setting(&kiq->ring);
        } else {
                mqd_idx = ring - &adev->gfx.compute_ring[0];
        }
 
        if (!adev->gfx.in_reset) {
                memset((void *)mqd, 0, sizeof(*mqd));
-               mutex_lock(&adev->srbm_mutex);
+               spin_lock(&adev->srbm_lock);
                soc15_grbm_select(adev, ring->me, ring->pipe, ring->queue, 0);
                gfx_v9_0_mqd_init(ring);
                if (is_kiq)
                        gfx_v9_0_kiq_init_register(ring);
                soc15_grbm_select(adev, 0, 0, 0, 0);
-               mutex_unlock(&adev->srbm_mutex);
+               spin_unlock(&adev->srbm_lock);
 
        } else { /* for GPU_RESET case */
                /* reset MQD to a clean status */
 
                /* reset ring buffer */
                ring->wptr = 0;
 
                if (is_kiq) {
-                   mutex_lock(&adev->srbm_mutex);
+                   spin_lock(&adev->srbm_lock);
                    soc15_grbm_select(adev, ring->me, ring->pipe, ring->queue, 
0);
                    gfx_v9_0_kiq_init_register(ring);
                    soc15_grbm_select(adev, 0, 0, 0, 0);
-                   mutex_unlock(&adev->srbm_mutex);
+                   spin_unlock(&adev->srbm_lock);
                }
        }
 
        if (is_kiq)
                gfx_v9_0_kiq_enable(ring);
        else
                gfx_v9_0_map_queue_enable(&kiq->ring, ring);
 
        return 0;
 }
@@ -3333,28 +3333,28 @@ static void 
gfx_v9_0_set_compute_eop_interrupt_state(struct amdgpu_device *adev,
                DRM_ERROR("Ignoring request to enable interrupts for invalid 
me:%d\n", me);
                return;
        }
 
        if (pipe >= adev->gfx.mec.num_pipe_per_mec) {
                DRM_ERROR("Ignoring request to enable interrupts for invalid "
                                "me:%d pipe:%d\n", pipe, me);
                return;
        }
 
-       mutex_lock(&adev->srbm_mutex);
+       spin_lock(&adev->srbm_lock);
        soc15_grbm_select(adev, me, pipe, 0, 0);
 
        WREG32_FIELD(CPC_INT_CNTL, TIME_STAMP_INT_ENABLE,
                        state == AMDGPU_IRQ_STATE_DISABLE ? 0 : 1);
 
        soc15_grbm_select(adev, 0, 0, 0, 0);
-       mutex_unlock(&adev->srbm_mutex);
+       spin_unlock(&adev->srbm_lock);
 }
 
 static int gfx_v9_0_set_priv_reg_fault_state(struct amdgpu_device *adev,
                                             struct amdgpu_irq_src *source,
                                             unsigned type,
                                             enum amdgpu_interrupt_state state)
 {
        switch (state) {
        case AMDGPU_IRQ_STATE_DISABLE:
        case AMDGPU_IRQ_STATE_ENABLE:
@@ -3853,21 +3853,21 @@ static int gfx_v9_0_init_queue(struct amdgpu_ring *ring)
        memset(buf, 0, sizeof(struct v9_mqd));
 
        mqd = (struct v9_mqd *)buf;
        mqd->header = 0xC0310800;
        mqd->compute_pipelinestat_enable = 0x00000001;
        mqd->compute_static_thread_mgmt_se0 = 0xffffffff;
        mqd->compute_static_thread_mgmt_se1 = 0xffffffff;
        mqd->compute_static_thread_mgmt_se2 = 0xffffffff;
        mqd->compute_static_thread_mgmt_se3 = 0xffffffff;
        mqd->compute_misc_reserved = 0x00000003;
-       mutex_lock(&adev->srbm_mutex);
+       spin_lock(&adev->srbm_lock);
        soc15_grbm_select(adev, ring->me,
                               ring->pipe,
                               ring->queue, 0);
        /* disable wptr polling */
        WREG32_FIELD15(GC, 0, CP_PQ_WPTR_POLL_CNTL, EN, 0);
 
        /* write the EOP addr */
        BUG_ON(ring->me != 1 || ring->pipe != 0); /* can't handle other cases 
eop address */
        eop_gpu_addr = adev->gfx.mec.hpd_eop_gpu_addr + (ring->queue * 
MEC_HPD_SIZE);
        eop_gpu_addr >>= 8;
@@ -3997,21 +3997,21 @@ static int gfx_v9_0_init_queue(struct amdgpu_ring *ring)
        tmp = RREG32(SOC15_REG_OFFSET(GC, 0, mmCP_HQD_PERSISTENT_STATE));
        tmp = REG_SET_FIELD(tmp, CP_HQD_PERSISTENT_STATE, PRELOAD_SIZE, 0x53);
        WREG32(SOC15_REG_OFFSET(GC, 0, mmCP_HQD_PERSISTENT_STATE), tmp);
        mqd->cp_hqd_persistent_state = tmp;
 
        /* activate the queue */
        mqd->cp_hqd_active = 1;
        WREG32(SOC15_REG_OFFSET(GC, 0, mmCP_HQD_ACTIVE), mqd->cp_hqd_active);
 
        soc15_grbm_select(adev, 0, 0, 0, 0);
-       mutex_unlock(&adev->srbm_mutex);
+       spin_unlock(&adev->srbm_lock);
 
        amdgpu_bo_kunmap(ring->mqd_obj);
        amdgpu_bo_unreserve(ring->mqd_obj);
 
        if (use_doorbell)
                WREG32_FIELD15(GC, 0, CP_PQ_STATUS, DOORBELL_ENABLE, 1);
 
        return 0;
 }
 
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c 
b/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c
index f2d0710..0e0e344 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c
@@ -415,29 +415,29 @@ static int sdma_v2_4_gfx_resume(struct amdgpu_device 
*adev)
        struct amdgpu_ring *ring;
        u32 rb_cntl, ib_cntl;
        u32 rb_bufsz;
        u32 wb_offset;
        int i, j, r;
 
        for (i = 0; i < adev->sdma.num_instances; i++) {
                ring = &adev->sdma.instance[i].ring;
                wb_offset = (ring->rptr_offs * 4);
 
-               mutex_lock(&adev->srbm_mutex);
+               spin_lock(&adev->srbm_lock);
                for (j = 0; j < 16; j++) {
                        vi_srbm_select(adev, 0, 0, 0, j);
                        /* SDMA GFX */
                        WREG32(mmSDMA0_GFX_VIRTUAL_ADDR + sdma_offsets[i], 0);
                        WREG32(mmSDMA0_GFX_APE1_CNTL + sdma_offsets[i], 0);
                }
                vi_srbm_select(adev, 0, 0, 0, 0);
-               mutex_unlock(&adev->srbm_mutex);
+               spin_unlock(&adev->srbm_lock);
 
                WREG32(mmSDMA0_TILING_CONFIG + sdma_offsets[i],
                       adev->gfx.config.gb_addr_config & 0x70);
 
                WREG32(mmSDMA0_SEM_WAIT_FAIL_TIMER_CNTL + sdma_offsets[i], 0);
 
                /* Set ring buffer size in dwords */
                rb_bufsz = order_base_2(ring->ring_size / 4);
                rb_cntl = RREG32(mmSDMA0_GFX_RB_CNTL + sdma_offsets[i]);
                rb_cntl = REG_SET_FIELD(rb_cntl, SDMA0_GFX_RB_CNTL, RB_SIZE, 
rb_bufsz);
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c 
b/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
index a69e5d4..f8a5da3 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
@@ -609,29 +609,29 @@ static int sdma_v3_0_gfx_resume(struct amdgpu_device 
*adev)
        u32 rb_bufsz;
        u32 wb_offset;
        u32 doorbell;
        int i, j, r;
 
        for (i = 0; i < adev->sdma.num_instances; i++) {
                ring = &adev->sdma.instance[i].ring;
                amdgpu_ring_clear_ring(ring);
                wb_offset = (ring->rptr_offs * 4);
 
-               mutex_lock(&adev->srbm_mutex);
+               spin_lock(&adev->srbm_lock);
                for (j = 0; j < 16; j++) {
                        vi_srbm_select(adev, 0, 0, 0, j);
                        /* SDMA GFX */
                        WREG32(mmSDMA0_GFX_VIRTUAL_ADDR + sdma_offsets[i], 0);
                        WREG32(mmSDMA0_GFX_APE1_CNTL + sdma_offsets[i], 0);
                }
                vi_srbm_select(adev, 0, 0, 0, 0);
-               mutex_unlock(&adev->srbm_mutex);
+               spin_unlock(&adev->srbm_lock);
 
                WREG32(mmSDMA0_TILING_CONFIG + sdma_offsets[i],
                       adev->gfx.config.gb_addr_config & 0x70);
 
                WREG32(mmSDMA0_SEM_WAIT_FAIL_TIMER_CNTL + sdma_offsets[i], 0);
 
                /* Set ring buffer size in dwords */
                rb_bufsz = order_base_2(ring->ring_size / 4);
                rb_cntl = RREG32(mmSDMA0_GFX_RB_CNTL + sdma_offsets[i]);
                rb_cntl = REG_SET_FIELD(rb_cntl, SDMA0_GFX_RB_CNTL, RB_SIZE, 
rb_bufsz);
-- 
2.9.3

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